Main research directions: chemical engineering and technology of oil and gas wells, theory, method, technology and research application of well working fluid; research and development new chemical materials for petroleum and natural gas engineering; research on important basic issues such as oil and gas exploration and development and coal chemical industry solid waste "turn waste into treasure",resource recycling" and coupling mechanism with clean energy, and the transfer and transformation of scientific and technological achievements. A series of innovative achievements have been made in the study of well working fluid "turning waste into treasure" and "resource recycling" of coal chemical industry solid waste and the coupling mechanism with clean energy. We insist on combining basic research with major needs breaking through a series of key technologies for practical use, and completing a series of technological scientific and technological achievements transformation.